slpss9723

Hey everyone, I need to do a fluid change on my rearend and I'm having trouble finding the Three Bond #1216 sealant for the diff cover now. Does anyone know of a suitable replacement? Any help would be appreciated.

guppymech

iTrader: (7)

Use a cover gasket with no sealant, torque the bolts to 22 ftlbs. I've never had a cover leak.

slpss9723

It's my understanding that you can't use a paper gasket with an Auburn and AAM diff cover. The paper gasket covers up the cooling ports and can burn up the diff. At least according to the supplemental owner's manual and a decade of experience. By the way, I neglected to mention that my car is an '02.

guppymech

iTrader: (7)

In that case I'd use Permatex Ultra Black RTV. I use Ultra Blue on my intake manifold end rails....no leaks. They've got a few different colors, specs are the same.

slpss9723

Thanks for your input man. :-)

redbird555

iTrader: (14)

yup either blue or black rtv is good i go with black because its more oil resistant than blue and because you dont notice it looking under the car lol

flintwrench69

iTrader: (11)

Specs arent the same. Blue has to be the worst as far as durability, black is better but I would use the gray RTV, it is no doubt the strongest & made for it. Why its usually called gear & axle RTV. If you cant find it at local parts stores GM, Ford & Chrysler dealers sell it.

guppymech

iTrader: (7)

These look substantially the same to me.
http://www.permatex.com/documents/td...tive/22072.pdf
http://www.permatex.com/documents/td...tive/81724.pdf

That Permatex Gear Oil RTV looks like the right stuff for a diff, never seen it before.

SS SLP2

iTrader: (8)

suzuki bike dealers in my neck of the woods stock/ have ordered the 1216 for me several times back when I was running the 7 1/2
I think you can call SLP and order the 1216

Johnny

therabidweasel

iTrader: (5)

I have used the blue all 12 years and never leaked a drop. I have an 02 with the auburn and aam cover.

slpss9723

I called SLP today, and Joey told me anything that meets OEM specifications, oil resistant, and is sensor safe will work. So I went with the Permatex ultra black. Thanks a lot for all the input guys! Now I have another question, what gear oil are y'all running? I have found conventional oils but they all seem to have limited slip additives in them already which concerns me a little. I bought two bottles of the ACDelco additive at the dealer today, and I just don't want a combo of stuff that doesn't mesh well together in there. Any suggestions?

99'CajunFirehawk157

iTrader: (57)

Last time I did my rear end I used this, didnt even know they made it until I looked.


And for the fluid, I used regular dino gear oil as the Auburn website says and 2 bottles of gm posi additive, yes 2 small (3oz) bottles. Quiet and no issues.

slpss9723

I know to use conventional oil bro, but my problem is that all I'm finding have limited slip additive in them already, and I'm not certain if that's okay or not....

flintwrench69

iTrader: (11)

Like I said, specs are not the same or it wouldnt be labeled differently.

I have used the stuff with the additive premixed & I never had a problem, you can do it either way.

01ssreda4

iTrader: (96)

I love the Ultra Black, but have used the new grey gear oil sealant as posted above and it works good also.

slpss9723

Thanks a lot fellas, I appreciate the help.

jlongolucco

any of that permatex stuff is pretty good product. I've always used the black and gray ones, however, they all have good charicteristics

pewter2002

iTrader: (4)

Permatex Red sensor safe high temp, stays flexible. No leaks whatsoever...

LS1121

iTrader: (17)

I believe my guy put Synthetic in mine and have no problems.

1 FMF

iTrader: (1)

felpro gasket #RDS55072 for like $5 from most auto parts stores.